A positive integer is called a perfect number if it is equal to the sum of all of its positive divisors, excluding itself. For example, 6 is the first perfect number because 6=3+2+1. The next is 28=14+7+4+2+1. There are four perfect numbers less than 10000. Write a program to find all these four numbers.
using namespace std;
int main(int argc, char *argv)
int num = 1;
sum = 0;
cout<<"Perfect numbers less than 10000: "<<num<<"\n";